bar (n.1)

12世纪末,"用来固定门或大门的木桩或铁杆",来自古法语 barre "梁、栏、门、屏障"(12世纪),来自古拉丁语 *barra "栏、屏障",有人认为来自高卢语 *barros "灌木丛的末端"[Gamillscheg等],但OED认为这是"不可信的",因为它"绝不符合意义"。

一般意义上的"任何阻碍、障碍或妨碍"是从1530年代开始的。肥皂的,到1833年;糖果的,到1906年(工艺本身可追溯到19世纪40年代),都是由形状相似而来。意为"横跨港口或河口的沙岸",来自1580年代,可能因为它是航行的障碍,所以叫它。 Bar graph 是1925年开始考证的。 Bar code 最早记载于1963年。 Behind bars "in prison"由1934年考证,美式英语。威尔士语 bar "a bar, rail",爱尔兰语 barra "a bar, spike"据说来自英语;德语 Barre ,丹麦语 barre ,俄语 barŭ 来自中世纪拉丁语或罗马语。

bar (n.2)

"小酒馆",1590年代,因指屏障或柜台的栏杆而得名,在这些栏杆上向顾客提供饮料或食物(见 bar (n.1))。

bar (n.3)

"整个律师团体,即法律界",1550年代,这种意义最终来自于将法官与法院大厅隔开的栏杆(见 bar (n.1))。达到一定地位的学生被"召唤"到这里来,参加该院的重要活动。然而,17世纪以后,人们普遍认为这是指法庭上的 bar ,即法官座位周围的木栏杆,犯人站在这里提审, barrister (q.v.)站在这里答辩。作为处理法庭事务的场所,这个意义上的 bar 在14世纪初已经成为 court 的同义词。

bar (n.4)

压力单位,1903年由希腊语 baros "重量"创造,与 barys "重"有关,来自PIE根 *gwere- (1)"重"。

bar (v.)

14世纪 ,"用铁栏杆固定(大门等)",出自 bar (n.1);"阻碍、阻止"的意义在1570年代就有记载。表达式 bar none "毫无例外"从1866年开始记录。

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Definitions of bar from WordNet
bar (n.)
a room or establishment where alcoholic drinks are served over a counter;
he drowned his sorrows in whiskey at the bar
Synonyms: barroom / saloon / ginmill / taproom
bar (n.)
a counter where you can obtain food or drink;
he bought a hot dog and a coke at the bar
bar (n.)
a rigid piece of metal or wood; usually used as a fastening or obstruction or weapon;
there were bars in the windows to prevent escape
bar (n.)
musical notation for a repeating pattern of musical beats;
the orchestra omitted the last twelve bars of the song
Synonyms: measure
bar (n.)
an obstruction (usually metal) placed at the top of a goal;
it was an excellent kick but the ball hit the bar
bar (n.)
the act of preventing;
there was no bar against leaving
Synonyms: prevention
bar (n.)
(meteorology) a unit of pressure equal to a million dynes per square centimeter;
unfortunately some writers have used bar for one dyne per square centimeter
bar (n.)
a submerged (or partly submerged) ridge in a river or along a shore;
the boat ran aground on a submerged bar in the river
bar (n.)
the body of individuals qualified to practice law in a particular jurisdiction;
he was admitted to the bar in New Jersey
Synonyms: legal profession / legal community
bar (n.)
a narrow marking of a different color or texture from the background;
a green toad with small black stripes or bars
Synonyms: stripe / streak
bar (n.)
a block of solid substance (such as soap or wax);
a bar of chocolate
Synonyms: cake
bar (n.)
a portable .30 caliber automatic rifle operated by gas pressure and fed by cartridges from a magazine; used by United States troops in World War I and in World War II and in the Korean War;
Synonyms: Browning automatic rifle
bar (n.)
a horizontal rod that serves as a support for gymnasts as they perform exercises;
bar (n.)
a heating element in an electric fire;
an electric fire with three bars
bar (n.)
(law) a railing that encloses the part of the courtroom where the judges and lawyers sit and the case is tried;
spectators were not allowed past the bar
bar (v.)
prevent from entering; keep out;
He was barred from membership in the club
Synonyms: debar / exclude
bar (v.)
render unsuitable for passage;
Synonyms: barricade / block / blockade / stop / block off / block up
bar (v.)
expel, as if by official decree;
Synonyms: banish / relegate
bar (v.)
secure with, or as if with, bars;
He barred the door